Metallics DIABST50-SDS 1/2 Drop-In Ancr Sds- Plus Pow

The Metallics DIABST50-SDS is a 1/2 inch drop-in anchor. Drop-in anchors are internally threaded, so the 1/2 inch refers to the bolt or threaded rod size it accepts, not the hole diameter. It's the size commonly used for hanging trapeze supports, strut, and heavier conduit runs off concrete.

It's the SDS-Plus setting version, so the setting tool chucks straight into an SDS-Plus rotary hammer rather than being driven by hand with a hammer. That's the difference between the DIABST50-SDS and a hand-set drop-in: you expand the anchor with the hammer drill you already have in the bag, which is faster when you're setting a lot of them overhead.

Drop-in anchors are for solid concrete. The expansion works by the internal plug wedging the shell against solid, uncracked base material, so hollow block and brick are the wrong application. For block, use a sleeve or screw anchor rated for hollow masonry instead.

Yes. A drop-in anchor sets flush with the surface, leaving an internal 1/2 inch thread at the concrete face. That's why electricians pick it over a wedge anchor for threaded rod drops: nothing protrudes, and you can remove and reinstall the rod or bolt later without disturbing the anchor.